NM_002465.4:c.44C>T

Variant names:

• chr12-101614514-C-T
• rs758898403
• NM_002465.4:c.44C>T

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BS1_Supporting

The NM_002465.4(MYBPC1):​c.44C>T​(p.Pro15Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000137 in 1,461,576 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000014 (0 hom.)
• Consequence: MYBPC1 NM_002465.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.39
• Publications: 0 publications found

Genes affected

MYBPC1 (HGNC:7549): (myosin binding protein C1) This gene encodes a member of the myosin-binding protein C family. Myosin-binding protein C family members are myosin-associated proteins found in the cross-bridge-bearing zone (C region) of A bands in striated muscle. The encoded protein is the slow skeletal muscle isoform of myosin-binding protein C and plays an important role in muscle contraction by recruiting muscle-type creatine kinase to myosin filaments. Mutations in this gene are associated with distal arthrogryposis type I. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]

MYBPC1 Gene-Disease associations (from GenCC):

• arthrogryposis, distal, type 1B

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• myopathy, congenital, with tremor

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• lethal congenital contracture syndrome 4

  Inheritance: AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
• digitotalar dysmorphism

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• lethal congenital contracture syndrome 3

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

LOC105369938 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• BS1: Variant frequency is greater than expected in population sas. GnomAdExome4 allele frequency = 0.0000137 (20/1461576) while in subpopulation SAS AF = 0.000151 (13/86232). AF 95% confidence interval is 0.0000889. There are 0 homozygotes in GnomAdExome4. There are 12 alleles in the male GnomAdExome4 subpopulation. Median coverage is 30. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002465.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYBPC1	NM_002465.4	MANE Select	c.44C>T	p.Pro15Leu	missense	Exon 2 of 32	NP_002456.2
	MYBPC1	NM_001404675.1		c.44C>T	p.Pro15Leu	missense	Exon 2 of 30	NP_001391604.1
	MYBPC1	NM_001254718.3		c.44C>T	p.Pro15Leu	missense	Exon 2 of 30	NP_001241647.1	Q00872-6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYBPC1	ENST00000361466.7	TSL:1 MANE Select	c.44C>T	p.Pro15Leu	missense	Exon 2 of 32	ENSP00000354849.2	Q00872-4
	MYBPC1	ENST00000361685.6	TSL:1	c.44C>T	p.Pro15Leu	missense	Exon 2 of 31	ENSP00000354845.2	Q00872-2
	MYBPC1	ENST00000545503.6	TSL:1	c.44C>T	p.Pro15Leu	missense	Exon 2 of 30	ENSP00000440034.2	Q00872-10

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000160 AC: 4 AN: 250718 AF XY: 0.0000221

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000290

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000137 AC: 20 AN: 1461576 Hom.: 0 Cov.: 30 AF XY: 0.0000165 AC XY: 12 AN XY: 727100

African (AFR) AF: 0.0000299 AC: 1 AN: 33470

American (AMR) AF: 0.0000224 AC: 1 AN: 44694

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39676

South Asian (SAS) AF: 0.000151 AC: 13 AN: 86232

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53346

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5722

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111946

Other (OTH) AF: 0.0000828 AC: 5 AN: 60358

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.0000165 AC: 2

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.29
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.052	T
Eigen	Uncertain	0.32
Eigen_PC	Uncertain	0.37
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Uncertain	0.90	D
M_CAP	Benign	0.044	D
MetaRNN	Benign	0.29	T
MetaSVM	Benign	-0.62	T
MutationAssessor	Benign	0.55	N
PhyloP100		3.4
PrimateAI	Uncertain	0.60	T
PROVEAN	Uncertain	-3.7	D
REVEL	Benign	0.24
Sift	Uncertain	0.016	D
Sift4G	Uncertain	0.033	D
Polyphen		1.0	D
Vest4		0.47
MutPred		0.34		Gain of catalytic residue at P17 (P = 8e-04)
MVP		0.37
MPC		0.047
ClinPred		0.94	D
GERP RS		5.3
Varity_R		0.14
gMVP		0.24
Mutation Taster		=87/13	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.22		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.22		Position offset: 17

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs758898403; hg19: chr12-102008292;